Making False Oath

And those who believe will say, “Are these the ones who swore by Allah their strongest oaths that indeed they were with you?” Their deeds have become worthless, and they have become losers. 5:53

Those are the ones who do not bear witness to falsehood and, if they ever pass by futility, pass with dignity. 25:72

They took their [false] oaths as a cover, so they averted [people] from the way of Allah , and for them is a humiliating punishment. 58:16

Meaning:-
Falsehood: a false statement; lie.
Futility: pointlessness or uselessness.
Avert: to turn away or aside:

Prophet (saws) said,
“If someone is ordered to take an oath and he takes a false oath in order to take possession of property of a Muslim, then he will incur Allah’s wreath when he meets Him.” (Sahih al-Jami # 6083)